In Vitro Evaluation of Bonding Effectiveness to Dentin of All-in-One Adhesives
Objectives:
The study was aimed at assessing the bonding potential of all-in-one adhesives to dentin.
Methods:
The microtensile bond strength of the all-in-one adhesives Bond Force (Tokuyama), AdheSE One (Ivoclar-Vivadent), and Xeno V (Dentsply) was measured in comparison with the etch-and-rinse system XP Bond (Dentsply). The ultrastructural characteristics of dentin–adhesive interface were observed under scanning electron microscope (SEM). Twenty human extracted third molars had their mid-coronal dentin exposed and ground with wet 600-grit SiC paper in order to create a standardized smear layer. Bonding procedures were performed according to the manufacturers’ instructions and microtensile beams were obtained with the “non-trimming” technique. The bond strengths in MPa were statistically analyzed including pre-test failures as “zero” values (Kolmogorov–Smirnov test, Levene's test, One-Way ANOVA, Tukey's test p
<0.05).
<0.05).Results:
The following bond strengths were recorded in MPa (mean±standard deviation): AdheSE One 31.7±21.3; Xeno V42.8±26.4; Bond Force 43.3±22.1; XPBond51.9±18.6. The statistical analysis demonstrated that the bond strengths achieved by Bond Force and Xeno V were similar to that of the etch-and-rinse adhesive, whereas the bond strength of AdheSE One was significantly lower. A distinct hybrid layer with resin tags was seen only in XP Bond specimens. All-in-one adhesives demonstrated a rather superficial interaction with the dentin substrate.
±standard deviation): AdheSE One 31.7±21.3; Xeno V42.8±26.4; Bond Force 43.3±22.1; XPBond51.9±18.6. The statistical analysis demonstrated that the bond strengths achieved by Bond Force and Xeno V were similar to that of the etch-and-rinse adhesive, whereas the bond strength of AdheSE One was significantly lower. A distinct hybrid layer with resin tags was seen only in XP Bond specimens. All-in-one adhesives demonstrated a rather superficial interaction with the dentin substrate.Conclusions:
Although the strongest bond to dentin was established by the etch-and-rinse system, however the all-in-one adhesives containing organic solvents reached bond strength levels that were comparable from a statistical point of view.
Reference:
Mariam Margvelashvili, Cecilia Goracci, Milos Beloica, Federica Papacchini, Marco Ferrari , Journal of Dentistry - February 2010 (Vol. 38, Issue 2, Pages 106-112, DOI: 10.1016/j.jdent.2009.09.008).
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